Grain and straw separator.



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No. 850,008. ATEN'TED APR.'9, 10.07. J. HUTCH-ESON.

GRAIN AND STRAW SBPARATOR.

' APPLIOATION EILED NOV. 10. 1906.

/ Swwnkoz I witnemeo rns NORRIS PETERS co., wAsnmorou, D. c

UNITED STATES PATENT OFFIOEQ GRAIN AND STRAW SEPARATOR.

No. so,oos.

Specification of Letters Patent.

Patented April 9, 1907.

Application filed November 10, 1906. Serial No 342.863.

' separators designed more particularly as an attachment tothreshing-machines andone of the principal objects of the invention isto provide means for carrying the straw backward after it has passedunder the threshingcylinder and presenting' the straw and unthreshedgrain to a second beater or threshing-cylinder in order that all thegrain and straw may be separated.

Another object of my invention is to provide a rotary straw-carrierhaving arms projecting through a wire guard or a series of bars whichwill permit the grain to drop through while the straw is carriedbackward to be presented to a concave and threshingcylinder.

These and other objects may be attained by means of the constructionillustrated in the accompanying drawings, in which Figure 1 is alongitudinal section through the forward portion of a threshing-machineand showing my improved devices therein. Fig. 2 is a plan view of thesame with the upper portion of the machine removed to better illustratethe parts.

Referring to the accompanyim drawings for a more particular description0 my invention, the numeral 1 designates an ordinary threshing-cylinder,and 2 is the concave in which said cylinder rotates, these parts beingof the usual construction. Extending backward from the concave 2 is abar 3, to which a series of uide bars or rods 4 are secured, said rodsor ars extending upward and being continued to form a concave 5 andextending thence backward and supported at 6 upon one of the bars of themachine-frame. Mounted to rotate within the upwardly extending portionof the straw-guard 4 is a straw-can rier wheel consisting of plates 7,having projecting arms or fingers 8 disposed between the rods or bars 4.The plates 7 are curved and secured to a suitable hub or disk at eachend. A threshing-cylinder 9 is mounted in the concave portion 5 of thestraw-guide rods,

portion 5 are a series of curved check-plates 11. J ournaled in the rearof the threshingcylinder 9 is a beater 12, consisting of a number ofplates 13, secured to suitable hubs and adapted to be rotatedsimultaneously with the other rotative parts of the machine.

The operation of my invention may be briefly described as follows: Therotative parts of the machine are revolved in the directions indicatedby the arrows in Fig. 1, and the grain and straw being fed in themachine is first presented to the threshing cylinder 1, from which it isconveyed backward to the fingers 8, which carry the straw over thecurved guide-rods 4 and into the concave 5, where the straw and grainare separated, the straw being carried backward to the beater 12 andfrom thence to the straw-carrier and the grain dropping through betweenthe bars 5, the check-plates 11 servin to prevent the straw from beingcarried forward to the wheel 7.

From the foregoing it will be obvious that my grain and straw separatorwill thoroughly separate the grain from the straw after it has passedthrough the ordinary concave and cylinder and that the result is a verymaterial saving in grain.

Having thus described the invention, what I claim is- In agrain-separator, the combination of a wheel comprising curved metalplates, fingers projecting from the outer edges of said plates, hubs towhich said plates are secured at their outer ends, axles on said hubs, astraw-guide comprising parallel rods or guides between which saidfingers are moved, said straw-guide being formed with a concave portionin rear of said wheel, a threshing-cylinder mounted. to rotate in saidconcave portion, a beater mounted in the frame in rear of thethreshing-cylinder, and means for rotating the wheel, thethreshing-cylinder and the beater, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

JAMES HUTOHESON.

Witnesses:

' F. E. MOSSMAN, W. N. KIRBY.

